Publication detail
Two-dimensional quantitative near-field phase imaging using square and hexagonal interference devices
DVOŘÁK, P. KLOK, P. KVAPIL, M. HRTOŇ, M. BOUCHAL, P. KRPENSKÝ, J. KŘÁPEK, V. ŠIKOLA, T.
English title
Two-dimensional quantitative near-field phase imaging using square and hexagonal interference devices
Type
WoS Article
Language
en
Original abstract
We demonstrate the formation of the near field with non-trivial phase distribution using surface plasmon interference devices, and experimental quantitative imaging of that phase with near-field phase microscopy. The phase distribution formed with a single device can be controlled by the polarization of the external illumination and the area of the device assigned to the object wave. A comparison of the experimental data to a numerical electromagnetic model and an analytical model assigns the origin of the near-field phase to the out-of-plane electric component of surface plasmon polaritons, and also verifies the predictive power of the models. We demonstrate a formation of near-field plane waves with different propagation directions on a single device, or even simultaneously at distinct areas of a single device. Our findings open the way to the imaging and tomography of phase objects in the near field.
Keywords in English
interference nanostructures; near-field; phase imaging; SNOM; SPP waves
Released
2022-08-26
Publisher
De Gruyter
Location
BERLIN
ISSN
2192-8614
Journal
Nanophotonics
Volume
11
Number
19
Pages from–to
1–12
Pages count
12
BIBTEX
@article{BUT178969,
author="Petr {Viewegh} and Pavel {Klok} and Michal {Kvapil} and Martin {Hrtoň} and Petr {Bouchal} and Jan {Krpenský} and Vlastimil {Křápek} and Tomáš {Šikola}",
title="Two-dimensional quantitative near-field phase imaging using square and hexagonal interference devices",
journal="Nanophotonics",
year="2022",
volume="11",
number="19",
pages="1--12",
doi="10.1515/nanoph-2022-0215",
issn="2192-8606",
url="https://www.degruyter.com/document/doi/10.1515/nanoph-2022-0215/html"
}